Fetal lung maturation tester



FIG. 1 is a top perspective view of a fetal lung maturation testershowing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and

FIG. 4 is a side elevational view thereof, the other side views beingmirror images thereof.

The ornamental design for a fetal lung maturation tester, as shown.